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Acylpyrazoles

The iV-acyl group is easily removed in weakly acidic or basic media, especially from those 1 -acylpyrazoles with electron-withdrawing substituents. The kinetics of hydrolysis and aminolysis of variously substituted acylpyrazoles was studied in great detail by Hiittel,102 using ultraviolet spectroscopy. Rate constants were found for both reactions, and an attempt was made to apply Hammett s equation to substituted pyrazoles. [Pg.421]

Allyl ketones. Reaction of acid chlorides or 1-acylpyrazoles with allylindium bromide in water is a convenient method for synthesis of allyl ketones. The divergent... [Pg.195]

Subst. carboxylic acid amides from 1-acylpyrazoles GON <... [Pg.122]

Aldehydes from carboxylic and chlorides yia a-diazoketones and 1-acylpyrazoles Synthesis with addition of 1 C-atom... [Pg.385]

See other pages where Acylpyrazoles is mentioned: [Pg.124]    [Pg.295]    [Pg.183]    [Pg.45]    [Pg.150]    [Pg.217]    [Pg.227]    [Pg.230]    [Pg.244]    [Pg.50]    [Pg.145]    [Pg.151]    [Pg.153]    [Pg.294]    [Pg.326]    [Pg.399]    [Pg.490]    [Pg.124]    [Pg.38]    [Pg.116]    [Pg.235]   


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1- Acylpyrazol-3-ones, reaction with

1- Acylpyrazoles acids

1- Acylpyrazoles aldehydes

4- Acylpyrazoles pyrazoles

A -acylpyrazoles

Aldehydes (s. a. Aldehyde 1-acylpyrazoles

N-Acylpyrazoles

Of 4-Acylpyrazol-3-ones

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